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Visar resultat 1 - 5 av 160 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Power-generation, Power-electronics and Power-systems issues of Power Converters for Photovoltaic Applications

   Författare :Björn Lindgren; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power systems; bang-bang control; shading tolerance; power quality; photovoltaic; embedded generation; current control; solar power generation;

   Sammanfattning : The thesis deals with issues related to solar energy systems, or more specifically, the electric systems of photovoltaic (PV) installations. Initially aspects of planning and estimating the performance of a PV-installation are considered. LÄS MER

3. 2. Power Measurement Techniques for Nonsinusoidal Conditions. The Significance of Harmonics for the Measurement of Power and other AC quantities

   Författare :Stefan Svensson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; non-sinusoidal; reactive; harmonics; power; sampling wattmeter;

   Sammanfattning : The increased application of power electronics and other non-linear loads makes it necessary to re-evaluate the measuring techniques used in the power system, and the measuring problems these loads cause. An instrument utilising digital sampling techniques has been built and evaluated at the Swedish National Testing and Research Institute (SP). LÄS MER

4. 3. Voltage Support of Transmission Grids Using Resources Located in the Underlying Lower Voltage Networks : Unlocking the Potential of Distributed Generation Reactive Power Capabilities

   Författare :Stefan Stanković; Lennart Söder; Andrew Keane; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reactive power support; voltage control; voltage stability; reactive power planning; inverter-based generation; active distribution networks; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : The path to sustainable, fossil-free future leads to inevitable energy transition towards renewable energy sources. A part of this transition includes replacement of conventional transmission system connected power plants with distributed renewables plants such as wind power. LÄS MER

5. 4. Voltage collapse in power systems : analysis of component related phenomena using a power system model

   Författare :Magnus Gustafsson; Niclas Krantz; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power system model; armature current limiter; reactive power; voltage collapse; OLTC; dynamic load; active power; field current limiter; voltage stability; load modelling; on-load tap changer; voltage instability; induction motor load;

   Sammanfattning : .... LÄS MER

7. 5. Design of ancillary service markets : reactive power and frequency regulation

   Författare :Jin Zhong; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reactive power; deregulation; electricity market; bilateral contract; ancillary services; frequency regulation and optimal power flow;

   Sammanfattning : .... LÄS MER